Nolan: his gimmick aside from the other stuff is energy attacks, he's got various ways to manifest them: energy orbs, beam attacks, lightning, or launching solid forms like swords, sawblades, axes, energy ropes/wires or spikes from the ground. As for deflecting, he might get hit atleast once and regenerate to learn Red Mist's attacks, from that point on he could use energy barriers or his reaction speed as needed.
Louis: I haven't figured out the full arsenal of technology his company makes, but a few things he does have back home are sticky explosives, chemical weapons, automated guns, anti-gravity devices, and the budget for a guard force to take over a small country. Unless he thinks up technology specifically to counter an opponent like Red Mist she could just deflect anything he throws at her.
Loki: basically possesses a random person in the world, still regular people but with added shapeshifting abilities, he has other powers but they're inconsistent and not too useful, the only saving factor about Loki is he keeps coming back, but he's hardly even a threat without the right host.
Atlas: Fair enough, I think she could beat Atlas, his psychic attacks are basically 'imaginary' weapons (eg; invisible blade, mime rope, finger guns) that trick your brain into thinking you got hit by something, which also physically affects you as if it were real, unavoidable since it's all in your head, but with enough willpower you can convince your mind it's not real and become immune to them.
Stitches: His weapon is an oversized sewing needle which he can use to magically stitch himself back together and heal wounds. He can also attach magic strings to human-like objects and puppet them (including living humans), but they can easily be cut.
Khan: His long range attacks are just magic chains with weapons on them that emerge from his coat, the chains can be as long as he want and have literally anything on the other end of them, they also have somewhat of a mind of their own and he can 'feel' through them to find people who are hiding from him, but it's pretty easy to just deflect or cut them.
R0Z3: she's kinda similar to Loki how she can keep coming back, but she's a lot smarter than Loki and has access to more tricks.